No worries.
For more information on how to handle pacnews you can use the search here as there have been more than a few threads discussing how to manage them.
The fast and correct way, including my own opinions, would be
Ensure meld is installed
sudo pacman -Syu meld
Set the DIFFPROG environment variable
echo "DIFFPROG=/usr/bin/meld" | sudo tee -a /etc/environment
Source the environment file to be sure
source /etc/environment
Run pacdiff
pacdiff -s
Use ‘v’ to view, compare, edit, and merge new code.
(note the same file will be presented again after merge/save/close … if satisfied with the marge you can then ‘r’ for remove. Or just ‘s’ to skip … retaining the file for next pacdiff check, such as after a reboot)
The focus is to preserve configurations while adding in the new standards.